Specifying accessible names for image buttons

Accessible name for a simple image button

In this example, an icon based button is given an accessible name through scripting. When the button is clicked a web page is opened.

//provide text equivalent for image button
this.check_btn.accessibilityProperties = new AccessibilityProperties();
this.check_btn.accessibilityProperties.name = "Check page validation";

//set up event listener and function to navigate to URL

this.check_btn.addEventListener(MouseEvent.CLICK, onClickHandler);

function onClickHandler(e: MouseEvent): void {
  var btn = e.target;
  var url: String = "http://validator.w3.org";
  var request: URLRequest = new URLRequest(url);
  navigateToURL(request, '_blank');
}

The result is demonstrated in the working version of Accessible name for a simple image button. The source of Accessible name for a simple image button is available.

Accessible name for a dynamic image button

import fl.controls.Button;
import fl.accessibility.ButtonAccImpl;

ButtonAccImpl.enableAccessibility();

var soundIsMuted = false;
var myButton: Button = new Button();
myButton.label = "";
myButton.x = myButton.y = 10;
myButton.width = myButton.height = 50;
updateAccName(myButton, "mute sound");
myButton.setStyle("icon", unmuted);
myButton.addEventListener(MouseEvent.CLICK, handleBtnClick);
addChild(myButton);

function handleBtnClick(e) {
  soundIsMuted = ! soundIsMuted;
  myButton.setStyle("icon", soundIsMuted? muted: unmuted);
  updateAccName(myButton, soundIsMuted? "unmute sound": "mute sound");
}

function updateAccName(obj, newName: String) {
  if (! obj.accessibilityProperties)
  obj.accessibilityProperties = new AccessibilityProperties();
  obj.accessibilityProperties.name = newName;
  if (Capabilities.hasAccessibility)
  Accessibility.updateProperties();
}

The result is demonstrated in the working version of Accessible name for a dynamic image button. The source of Accessible name for a dynamic image button is available.